Electronic Device Lens Driving Synchronization
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Solution Overview
Problem
Existing electronic devices face challenges in synchronizing lens driving information with image data, leading to difficulties in accurate image processing without optical image stabilization (OIS) or auto focus (AF) related information.
Innovation Solution
An electronic device is designed with a processor that outputs a first signal including lens driving information to both an actuator for driving the lens and an image sensor, using interfaces such as I2C, I3C, or SPI, to ensure synchronization of lens position information and image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lens driving information is not synchronized with image data, then device complexity is reduced, but image processing accuracy deteriorates
Solution Approach 1:
The patent merges lens driving information with image data by embedding the lens information into the image data structure. The image sensor simultaneously outputs both image data and lens driving information through a unified interface, eliminating the need for separate synchronization mechanisms and reducing system complexity while maintaining processing accuracy.
Solution Approach 2:
The patent introduces an intermediary mechanism where the image sensor acts as a mediator that collects lens driving information from the actuator and packages it with the image data. This intermediary approach simplifies the synchronization process by having the image sensor handle the coordination between lens control and image capture operations.
2Loss of information
If separate interfaces are used for actuator and image sensor control, then ease of manufacture is improved, but information loss increases
Solution Approach 1:
The patent implements a universal interface that serves multiple functions: it transmits both image data and lens driving information from the image sensor, and can also carry control signals to the actuator. This multi-functional interface eliminates information loss by ensuring lens driving information is always transmitted alongside image data, while the standardized interface design maintains ease of manufacture.
3Measurement precision
If lens driving information is embedded in image data, then image processing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the data transmission by separating image data into distinct regions (image area) and lens driving information into separate regions (metadata area) within the same data stream. This segmentation allows for clear organization and processing of different data types while maintaining their synchronization, reducing the complexity of data handling despite the integrated structure.
Data Source
AI summary
An electronic device includes a lens, an image sensor configured to generate image data from incident light that is incident through the lens, an actuator configured to drive the lens, at least one processor configured to output a first signal including lens driving information for controlling the actuator to drive the lens, a first interface configured to present, by the at least one processor, the first signal to the actuator, and a second interface configured to present, by the at least one processor, the first signal to the image sensor.